1. An easier interface;Clarkson;Byte,1991
2. Automatic extraction of target images for face identification using the sub-space classification method;Akamatsu;IEICE Trans. Infor. Syst.,1993
3. Face recognition—features versus templates;Brunelli;IEEE Trans. PAMI,1993
4. Recognition of facial expression from optical flow;Mase;IECE Trans.,1991
5. Eigenfaces for recognition;Turk;J. Cognitive Neural Sci.,1991